AD9235BRUZ-40

Overview

The AD9235BRUZ-40 is a monolithic, single-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a maximum sampling rate of 40 MSPS and features a wide bandwidth differential sample-and-hold amplifier (SHA). The device utilizes a multistage differential pipelined architecture with output error correction logic to ensure 12-bit accuracy without missing codes across the full industrial temperature range (-40°C to +85°C). It supports flexible analog input ranges of 1 V p-p or 2 V p-p and includes an on-chip voltage reference. Power consumption is rated at 300 mW at 65 MSPS, while operating from a single 3 V supply (2.7 V to 3.6 V).

Feature Summary

• Multistage differential pipelined architecture with integrated output error correction logic.
• Wide bandwidth truly differential sample-and-hold amplifier (SHA) supporting single-ended or differential inputs.
• Integrated clock duty cycle stabilizer (DCS) for maintaining performance under varying clock pulse widths.
• On-chip voltage reference and high-performance SHA.

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• Battery-powered instruments
• Hand-held scopemeters

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm that the component matches the required data format and power supply specifications for your system design. Ensure proper ESD precautions are taken during handling due to the sensitivity of the CMOS process.

Selection Notes

Select this model when a 40 MSPS sampling rate is sufficient for the application's Nyquist frequency requirements. Consider the AD9235BRUZ-20 if lower power consumption is prioritized over speed, or the AD9235BRUZ-65 if higher throughput is necessary. Evaluate the need for the internal reference versus external precision references based on system noise requirements.

Part Context

The AD9235BRUZ-40 belongs to the AD9235 family of 12-bit ADCs, which also includes the -20 and -65 variants differing primarily in maximum sampling rates. These devices share a common pinout compatible with the AD9214-65, facilitating simplified upgrades from 10-bit systems. The BRUZ suffix indicates a 28-lead TSSOP package suitable for surface-mount applications.

Replacement Considerations

The AD9235BRUZ-20 and AD9235BRUZ-65 are direct functional replacements within the same family, sharing identical pinouts and architectures but offering different maximum sampling rates. For legacy 10-bit systems, the AD9214-65 serves as a pin-compatible predecessor.